Access your Jellyfin anywhere with Caddy

[VP Lex]

You used your router internal ip not your external ip trying using the ip from here. https://ipchicken.com

I changed my Caddyfile to

<domain>.duckdns.org
reverse_proxy <public_ip>:8096

Still doesn't work internally nor externally.

atleast 127.0.0.1 works internally.

127.0.0.1 & 192.168.X.X works in caddyfile but not public ip.

I can do https://<public_ip>:8920 and access jellyfin server from outside. it is accessible. means port forwarding, jellyfin all works fine.
I need it to connect to duckdns and caddy to get some ssl certificate to make it work with jellyfin clients.

duckdns also points to the same public ip.